Lock



March 29, 1927. i 1,622,999

A. J. FRITH Lock Filed Sept. 22, 1926 2 Sheets-*Sheet 22A .rnoldINVENTOR WITNESS: ATIORNEY BY n F.

Paienied Mar, 29, 1921.

UNITED STATES'- ARNOLD J'. FBITH, OF S'ELMA, ALABAMA. y

LOCK.

Application led September 22, 1926.` Serial No.` 137,097.

y The object of this invention is to. provide a device including acasing, carryinga springv mounted yoke member and a plurality of barrelshaving their axes in alinement, one of the barrels being retained byspring-held pins to be controlled b -a key, this barrel controlling `theother arrels thru which lookin engagement with the yokeis effected.

'wat View, the'invention consists in the novel con; struction andarrangement of elements described, illustrated and claimed, it beingunderstood that modifications may beA made within the scope of theclaims without departing from the spirit of the invention.

In the drawings forming part 'ofthis application,

.Figure 1 i's aV view showing the casing of the lock in vertical orlongitudinal section, with the yoke 'in elevation.

Figure 2 is an edge elevation of the structure of Figure 1'.

. Figure 3 is a.section on ure 1. y

Figure 4 is a section on line 4--4 of Figure 1. I l

Figure 5 is a section thru the casing, with the yoke in releaseposition, and the barrels in elevation.

Figure 6 is a -bottom planview vof the structure of Figure 5. Y

Figure7 is a section on line 7-7 of Figure 6.

Figure is a section on line 8 8 of Figure 1.

.Figure 9 is a'section on line 9-9 of Figure 1.

Figure 10 is avfra mentary view showing a slotted-portion of t e casing,and a lug for engagement by the pivoted element of Figline 3 3 of Fig-The housing or casing is designated 10, and is provided with a. bore 11,in which the longer end portion or shank 12 of the yoke 13 is mounted. Acoil spring 14 within bore 11 bears on the lower end of yoke 13 andespecially on the lower end of the shank 12 thereof, and tends to forcethe yoke into an upper and release position, when the device isunlocked. The shank 12 carries a or lug 12, and the latter lprojectsthru the curved or cam slot 15 in t e casing, this slot beingillustrated in Figure 2, and elsewhere. The Iyoke 13 carriesa collar 13adapted to lit over the upper end of casing 10, and close any space oterwise existing around the the foregoingand'other objects in.

other element, is prevented.

The opposite end portion of -the yoke 13 1s cut away, as 'shown inFigures 1` 3 and 5, to form bayonet slots designated 17, and adapted Ydevices referred t'o below.

.shank 12, so that the insertion of'a. tool or" emana for cooperationwith `the engaging -A lower barrel 2O is rotatable in a ver- I ticalbore in the casin v10, and is key controlled, andan upper`- arrel 21 iscontrolled by the lower barrel, so that upon? the insertion of a, key 22which properly' controls the pin tumblers or spring pins, the lower bar;rel 20 is released and is permitted to rotate,

at which time thelug 24 depending from the upper barrel 21 is engaged byspring' 25 on slot 17 on the end of the yoke. The rotation of upperbarrel 21 also results in the release of bolt'27 from the engagingposition of Figure 1, so that the shank 12 ofthe yoke 13 is lifted byspring 14, and is swung to the position of Figure5, in view of thecooperation between pin 12' on the shank 12, and the cam slot 15.

Barrel -20 is provided with longitudinal bores or channels receiving fpins 30 withl which springs 31 cooperate, 'the springs controlling thepins, when not controlled by the key 22. The pins 30 are slottedtransversely at 32, and the bolt, bar, or dog 33 'cooperates with theslots when the latter register, the

release position of, bolt 33 being shown in Figure 8, said element 33passing into the y recess 34 and engaging shoulder 35 when free to actunder the influence of spring 36 The bolt 33 recedes when the key causesthe slots of the pins to register and when the barrel 20 is rotated bythe key. 'In this connection it will be noted that slot or recess 34, isprovided with a cam wall.

Upon rotating barrel 20, en gement between elements 24 and 25 of Flgure4 is af-4 loo fected, andthe upper barrel 21 is rotated until it comesto position permitting release of pin 21 from the adjacent bayonetslot'17,

and the release of manner.- I.

The 'rotation of the upper barrel 21 also moves the recessed ortion 38into ition. opposite the left en of bolt 27, so t at the latter moves tothe left in Figures 1 and 3, and` is released from the recess 27 in theshank 12, the release position being shown pin 21", in a similar inFigure 5. Spring 39" permits of this movement of element 27 to the left.

A pivoted arm or dog 40, shown especially in Figures 1 and 9, project'thru an opening in the side of upper barrel 21, and is adapted toproject into the slot 4&1 in the wall of casing 10, and to cooperatewith and engage shoulder 42, the inner end of element 40 acting underthe influence of thespring 43. This spring, as well as the pivoted element 40, is mounted ina recess in barrel 21 which receives the end orshort end of the yoke 13. In order to protect the upper barrel 21, plate45is secured to the upper end of the casing 10, and is provided withapertures for opposite portions of the yoke, as will be apparent fromthe drawings. i

The end of the yoke 13, when the latter is being moved to lockingposition, releases dog 40 from shoulder 42, and permits movement of thebarrel to locking osition,un der the action of spring 47. The release ofthe lock by means of key 22, to be inserted thru slotted key plate 22',has been described.

Having described the invention what is claimed is v 1. In a lock, acasing, a spring operated yoke mounted in the casing and including ashank, an upper barreland a .lower barrel in alinement therewith, meansfor moving the upper barrel by the rotation of the lowerk barrel, springcontrolled and key controlled pins mounted inthe lowerv barrel, a boltfor engaging the shank, retaining the yokein locked position, the upperbarrel having a recess into .which the bolt is movable for releasing theshank of. the yoke.

2. In a lock, a casing,'.a spring operated yoke mounted in Ethe casingand including a' shank, an upper barrel and a lower barrel in alinementtherewith, means for moving the upper barrel by the rotation of thevlower barrel, spring controlled and key controlled pins mounted in thelower barrel, thel upper barrelbeing recessed for receiving one end ofthe yoke, devices formed oli the inner Wallof the recess and on theadjacent end.

of the yoke for producing interlockingengagement when the upper barrelis rotated, and a bolt for engaging the shank, retaining the yoke inlocked position, the upper barrel having a recess into which the bolt ismovable for releasing the shank of the yoke.

3. In a lock, a casing, a spring operated yoke mounted in the casing andincluding a shank, an upper barrel and a lower barrel in alinementtherewith, means for moving the upper barrel by the vrotatiot ot' thelower barrel, spring controlled and key controlled pins mounted inthelower barrel, springheld pivoted means carried bv the upper barrel,means lformed in the wa ing for engaging the pivoted means, the yokebeing adapted to release the engaging means, resilient means forrotating the upper bar rel, and a bolt for engagingpthe shank, retainingthe yoke in locked position, the' upper barrelhaving a recess into whichthe bolt is movable for releasing the shank of the yoke. j

4.' In a lock, a casing having a bore and a cam slot therein, al spring'operated yoke mounted in the bore and including a, shank,

and including means, engaging the slot,

whereby partial rotation is imparted to the shank and yoke, an upperbarrel and a lower barrel in alinement with each other, means for movingthe upper barrel bythe rotation of the lower barrel, a bolt for engagingthe shank, retaining the yoke in locked' position, the upper barrelhaving a recess into which the bolt is movable for releasing the shankof the yoke.

.In testimony whereof I aiiix my signature. ARNOLD J. FRITH.

of the cas-'

